“…The dominant framework presumes that each firm behaves with the objective of profit maximization, and exits from market occur when the profit (or expected/revealed profit) is below some threshold (Jovanovic, 1982;Ghemawat and Nalebuff, 1985;Frank, 1988;Klepper, 1996;Das and Das, 1996). Thus, in empirical studies, exits have firstly been supposed to be linked with economic variables such as the rate of growth or contraction rate of the market, the level or change of the price-cost margin (or other profit measures), strength of entry and exit barriers, and firm size (e.g., Mansfield, 1962;Shapiro and Khemani, 1987;Austin and Rosenbaum, 1990). 4 There are several Japanese studies that follow this approach (Kusuda, Yokokura and Negoro, 1979;Morikawa and Tachibanaki, 1997;Honjo, 1999a;and Doi, 1999).…”